21387906

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{40973}}^1$

素因数の和:41010

約数の個数: 24

約数和(自身を含む): 47939580

約数和(自身を除く): 26551674

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 87, 174, 261, 522, 40973, 81946, 122919, 245838, 368757, 737514, 1188217, 2376434, 3564651, 7129302, 10693953, 21387906]

約数ペア:

[(1, 21387906), (2, 10693953), (3, 7129302), (6, 3564651), (9, 2376434), (18, 1188217), (29, 737514), (58, 368757), (87, 245838), (174, 122919), (261, 81946), (522, 40973)]